Week 8-3D Tetra Meshing Challenge

1. Create a Teramesh for Housing component with the following quality criteria.

TetraMesh Generation Method: 2D to 3D Conversion

Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units 

Tet collapse: 0.15

AIM: To perform 3D tetra mesh on the given models

PROCEDURE: 

 Model 1(Housing)
   

 Step 1:-

• Import the given model and check for any geometry error

In this model there are few missing surface like shown in the below image

Geometry

        

Fill the surface by Surface option or quick edit> filler surface option, like shown in below image

 Step 2:-

 Next step is to defeature some edges which might fail for minimum length quality criteria, like shown below|

    

Initially Mesh the surface using 2D tria elements

        

• Check for minimum and maximum element size error from and clear the same

      Below the image shows there no min and max element size error

     

Step 3:-

Perform 3D tetramesh using the 2D tria elements, 3D>Tetramesh>select all the elements

         

• Check tet collapse for 0.15, in tools>check elements>3d>tet collapse, fix the errors by tetra remesh or manually by moving the nodes

             

          

2. For the given model, Create a 3D Tetramesh with the following quality criteria. 

      

The above errors will be fixed by toggle edge option, like shown in the image below

•  

 Step 2:-

• In this model there is no minimum and maximum element size criteria
• So used the volume tetramesh method to mesh the model
• The given model is surface, so used 3d>tetramesh>volume tetramesh> surface, gave the desired element size and gave tet collapse value in tetramesh parameter
• The given model is meshed and fixed all the tet collapse error

          

Tetra elements

   

Model 3:

Steps carried out :-

• Import the model to the software, look for any geometry error
• There are 4 different components in this model, mesh each the component in different methods
• Casing 1 is meshed using volume tetramesh method
• Casing 2 is meshed using quick tetramesh method
• Central hub is meshed by 2d tria element and convert the same to 3d tetramesh

Hub will be meshed one side and be reflected to the other side like shown below

          

         

           

             

fINAL PART 

         

CONCLUSION:

• Understood the types of 3d mesh used in different scenario

The given model is meshed using 3d tetra elements